Relay-instrument



(No Model.) G. T. WOODS.

RELAY INSTRUMENT.

No. 364,619. Patented June 7, 1887.

1171:! [az'Z SpeneZ N. PETERS. Phnllz-Liimgmphun'wuhinglnn. 0:0.

"UNITED [STATES GRANVILLE T. woons,

PATENT OFFICE.

OF CINCINNATI, OHIO.

RELAY-INSTRUMENT.

l SPECIFICATION forming part of Letters Patent No. 364,619, dated June'7, 1887.

To all whom it may concern:

Be it known that I, GRANVILLE T. Woons, a citizen of the United States,residing at Cincinnati, Ohio, have invented new and useful Improvementsin Relaylnstruments, of which the following is a specification.

My invention relates to relay-instruments used in telegraph y, itsobject being to improve in construction and sensitiveness of action forgeneral use, but with particular reference in the present instance tothe system of inductive telegraphy for which I have an applicationpending for Letters Patent.

Mechanism embodying my invention is illustrated in the accompanyingdrawing, showing my improved relay in elevation, with one of theelectromagnet spools and hollow polar extensions sectioned to show theconstruction.

Referring, now, to the drawing, in which the parts here referred to areindicated by the letters of reference, A is a magnet of iron or steel,bent in U form and vertically mounted upon a stand or base, (not shown,)and B B are hollow polar ex tensions secured in the same axial linehorizontally in the vertical ends of the magnet A. Vithin the hollowextensions B B are placed cores 0 O of electro-magnets, whose helices DD are in the main circuit at m, and so wound upon spools surrounding thepolar extensions B B as to give the same signs of magnetism to thecontiguous ends of the The cores 0 O are threaded in the hollowextensions B B and extend inwardly beyond the spools, adjustable towardor from each other.

A metallic stand, E, secured by its legs at F F to the base of themagnet A, rises centrall y, with lateral arms a a extending beyond theterminus of the stand E. At the sides of the upper end of the stand Eare secured, by holding-screws G G, threaded through the arms (6 atopposite sides, two upright soft-iron armatures H H, the holdin screwsclam J- ing the lower ends of the armatures against the central trunk ofthe stand E, with insulating-blocks l I interposed between the ends ofthe holdingscrews and said trunk,and similar insulations, I 1,interposed between the armatures H H and the central trunk of the standE. At the upper ends of the lateral arms a are adj listing-screws G G,bearing in- Application filed September 17, 1886. Serial No. 113,823.(No model.)

wardl y against the armatures (through inten posed insulatingblocks K K)beyond the terminus of the stand E, the function of the latter adjustments being to force the armatures together or allow them to moveapart by the repelling action of the polar extensions 13 B, the flexionof the armatures permitting such movement without pivotal connections.

The armatures H H extend upward between the contiguous ends of the cores0 O andbe yond the same, one ofthe armatures, as H, be ing longer thanthe other and bent over behind H, and provided with a contact-button, O,forming a back-stop, the end of the straight armature H being similarlyprovided with corresponding contact, 0. At the opposite contact side isplaced a block of insulating material, 1 as shown. The armatures H Hareconnected with 'the local circuit-wires L L, respectively. Theoperation is as follows: \Vhennormally at rest, the armatures H H stand,as indicated in the drawing, with the point 0 resting against theinsulating-block P. WVhen a current is sent through the line at m, themagnets O O are similarly energized, and their mutual attraction tendsto draw the armatures H H apart and bring the contacts 0 0 together,thus closing the local circuit L L. \Vhenevcr the circuit on m isbroken, the resiliency of the armatures H H asserts itself and holds thearmatures H H upon the. insulating-contacts P O.

The means of adj nstment are as follows: The holding-screws G" G notonly serve to clamp the armatures H H to the stand E, but, as will beobvious, react upon the arms a a to regulate the initial positions oftheadjustingserews G G, While the latter serve to regulate the positionof the free ends of the armatures H H. The hollow polar extensions B B,being threaded in the supporting-arms of the magnet A, are therebyadjustable longitudinally, while the cores 0 0, being threaded inthepolar extensions B B, are likewise independently adjustablelongitudinally. It will also be observed that the construction, whileextremely simple, permits ready separation for cleaning and permanentadjustment of parts. The c011- struction also affords a perfect immunityfrom disturbing shocks or vibrations-such as would be experienced onmoving railway-trains or in too like situationswhile attaining theutmost sensitiveness of action.

WVhiIeIhave described certain parts as being vertical or mountedvertically, it should be understood that I use the term only in relationto the base or support of the instrument, which may, in fact, be used inany position.

I have described the part A as a permanent magnet; but the relay wouldbe operative to a practicable degree were the part A constructed of ironor any other metal or substance and in any form capable of affording amere support for the elect-ro-magnets and the armaturcs. In such casethe polar extensions 13 would exercise no magnetic influence and mightbe wholly omitted, and the spools secured directly to the terminals ofthe support A and the cores 0 C rendered adjustable through the spools.The construction first described, however, is to be preferred.

I claim as my invention and desire to se cure by Letters Patent of theUnited States 1. The combination, in a relay, of magnets in the maincircuit arranged with a separating interval in the same axial line,their contiguous poles exhibiting the same sign of magnetism, with apair of soft-iron armatnres in local circuit arranged in said intervalacross the axial line of the magnets, substantially as set forth.

2. In a relay, a magnet having two poles exhibiting the same sign ofmagnetism, in combination with a pair of armatures arranged between thepoles of said magnet and exhibit ingthe opposite sign ofmagnetism, assetforth.

3. The combination, in a relay, of a tubular extension of themagnet-pole, an insulated helix surrounding the same, and a soft-ironcore inserted in and through such hollow extension, in combination withtwo vibratory an matures and contact-stops in the local circuit,substantially as set forth.

4. In a relay, the combination of a magnet provided with two hollowpolar extensionsin the same axial line and carrying upon such extensionshelices of electro-magnets whose cores are placed within and projectthrough such polar extensions, with two vibratory armatures risingbetween the contiguous ends of said clectroi'nagnets and of said polarextensions, the end of one such armature extending also rearward of theother and provided with insulated and contact stops, substantially asset forth.

5. The relay as constructed, embodying, in combination, a U-shapedmagnet, a pair of vibratory armatnres constituting portions of the localcircuit, rising between the poles of the magnet, hollow extensions ofthe magnet adjustable toward the armature, a helix surrounding andasoft-iron core inserted through and adjustable in the hollow extensions,and means, substantially as described, for adjusti ng the armatnres inrelation to each other.

6. In a relay, in combination with the clec tromagnets, the vibratoryarmatures II II, one of said armatures, as IT, being extended to a pointbehind the other, and provided at one side with an insulating-block andat the other with a contact-block, substantially as set forth.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.-

GRANVILLE T. WOODS. Witnesses:

L. M. Hosm, G. I). KERR.

